/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesInterface/Public/Online/ExternalUI.h
Shows the online service's login UI
[TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FExternalUIShowLoginUI](API\Plugins\OnlineServicesInterface\Online\FExternalUIShowLoginUI) > ShowLoginUI ( [FExternalUIShowLoginUI::Params](API\Plugins\OnlineServicesInterface\Online\FExternalUIShowLoginUI\Params) && Params )